McKay wrote his first book—In Good Company—in 1983. The book is an autobiographical account of his service in Vietnam. Other books written by McKay include Delta Four: Australian Riflemen in Viet Nam and Tracy, about the impact of Cyclone Tracy on Darwin in 1974.
Members of Aboriginal, Torres Strait Islander and Maori communities are advised that this catalogue contains names and images of deceased people. All users of the catalogue should also be aware that certain words, terms or descriptions may be culturally sensitive and may be considered inappropriate today, but may have reflected the author's/creator's attitude or that of the period in which they were written.